swapPronunciation: (swop), [key]
—v., swapped, swap•ping,
to exchange, barter, or trade, as one thing for another: He swapped his wrist watch for the radio.
to make an exchange.
an exchange: He got the radio in a swap. Also,swop.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.